table of contents...cbip-325 cbip guide on static energy meter specifications & testing on standard...

of 29

Table of Contents 1. SCOPE: ................................................................................................................................ ............................... 2

2. STANDARD APPLICABLE: ................................................................................................ ............................. 2

3. SUPPLY SYSTEM: ................................................................................................................................ ............. 3

4. SUPPLY VARIATION: ................................................................................................................................ ...... 3

5. CLIMATIC CONDITION: ................................................................................................................................ . 3

6. GENERAL REQUIREMENT: ................................................................................................ ........................... 4

7. METER HOUSING CONSTRUCTIONAL REQUIREMENT:................................................................ ........ 4

8. METER CONSTRUCTION REQUIREMENT WITH RESPECT OF ELECTRICAL:.................................. 7

9. SEALING: ......................................................................................................................................................... 12

10. DISPLAY MODULE: ....................................................................................................................................... 12

11. DISPLAY PARAMETER: ................................................................................................................................ 13

12. NAME PLATE/MARKING OF METER: ........................................................................................................ 14

13. QUANTITIES TO BE MEASURED, DERIVED, MONITORED AND MEMORISED: ............................. 14

14. MAXIMUM DEMAND: ................................................................................................................................... 15

15. MAXUMUM DEMAND RESET: .................................................................................................................... 15

16. CONFIGURATION DETAILS: ....................................................................................................................... 15

17. SELF DIAGNOSTIC: ....................................................................................................................................... 16

18. TAMPER FEATURES: .................................................................................................................................... 16

19. COMMUNICATION CAPABILITIES: ........................................................................................................... 18

20. BASE COMPUTER SOFTWARE (BCS): ....................................................................................................... 18

21. PROGRAMMING: ............................................................................................................................................ 19

22. SUBMISSION OF TENDER SAMPLE: ......................................................................................................... 19

23. TYPE TEST REPORT: ..................................................................................................................................... 20

24. MINIMUM TESTING FACILITES: ............................................................................................................... 20

25. PROTO TYPE TEST: ....................................................................................................................................... 20

26. ACCEPTANCE TYPE TEST: .......................................................................................................................... 21

27. AUDIT TEST: ................................................................................................................................................... 22

28. ROUTIN TEST: ................................................................................................................................................ 23

29. INSPECTION: .................................................................................................................................................. 23

30. QUALITY ASSURANCE PLAN: ..................................................................................................................... 23

31. BIS LICENSE: .................................................................................................................................................. 24

32. GUARANTEE PERIOD: .................................................................................................................................. 24

33. PACKAGING: ................................................................................................................................................... 24

34. SERVICES: ....................................................................................................................................................... 24

35. ANNEXURE -I: ................................................................................................................................................ 25

36. ANNEXURE -II: ............................................................................................................................................... 26

37. ANNEXURE -III: ............................................................................................................................................. 28

38. ANNEXURE -IV: .............................................................................................................................................. 29

of 29

1. SCOPE:

TECHNICAL SPECIFICATIONS OF SINGLE PHASE 2 WIRE; 5-30 AMP. FULLY STATIC WATT HOUR METER CLASS 1.0 WITH DLMS PROTOCOL AS PER IS 15959, CATEGORY- C3 AND WITH LCD DISPLAY AND FACILITY FOR DATA DOWN LOADING FOR SOLAR ROOF TOP (BIDIRECTIONAL)

(a) This specification covers design, engineering, manufacture, and testing of ISI marked A.C.

single phase two wire solid state (static), bidirectional/fully electronic energy meters of accuracy class 1.0 and current rating 5-30 Amps for single phase with back lit LCD display as per requirement given in this specification.

The single phase meter should be single phase two wire, two element type with DLMS( as per IS 15959:2011 Category C3) capable to record and display energy in KWh and demand in KW for single phase two wire A.C. loads respectively for power factor range of Zero Lag-Unity-Zero Lead, as per requirement given in this specification. Some parameters asked in this specification may not cover in C3 category (e.g. export kWh, export kW MD etc). OBIS code of such parameters available in other categories of IS 15959 may be used. Meter should record total energy (fundamental energy + harmonic energy) having facility/capability for recording tamper information in LT 1-phase Consumers.

(b) It is not the intent to specify completely herein all the details of the design and construction of

material. However the material shall conform in all respects in high standards of engineering, design and workmanship and shall be capable of performing in continuous commercial operation. It is mandatory that, the meter shall be ISI marked.

The meter shall have to be procured from the original manufacturer who is registered vendor of UGVCL or other subsidiaries of GUVNL.

2. STANDARD APPLICABLE:

While drawing these specifications, reference has been made to following Indian and International Standard specification. In case certain details are not covered in these specifications, the relevant Indian and International Standard shall be applicable. IS 13779/ 1999 Specification of AC Static Watt hour meters, class 1.0 & 2.0. IEC 61036-2000 Specification for AC static Watt-hour Meters, Class 1 & 2. IEC 1036 Static Energy Meters

IEC 62052-11 Electrically Metering equipment (AC)–General Requirement, Test & Test condition

IEC 62053-21 Static Energy Meters for Active Energy IS 9000 - Environmental testing IS 8161 (Draft) - Impulse wave testing IS 12346 - Specification for testing equipment for AC energy meters. IS 8686 - w.r.t. High frequency disturbance testing

IS-15707 Specification for Testing, evaluation, installation & maintenance AC Electricity Meters-Code of Practice of

CBIP-325 CBIP guide on static energy meter specifications & testing on standard for Operation of meters

IS 15959 Data exchange for electricity meter reading, tariff and load control- companion specification

CEA Notification Dtd: 17/03/2006,04/06/2010, 26/11/2014 Government of Gujarat Energy and Petrochemical department G.R. NO. SLR-11-2015-2442-B DTD 13th August 2015

of 29 CEA Regulation on installation and operation of meters Dtd: 17/03/2006, 04/10/2010 & 26/11/2014. G.R. NO. SLR-11-2015-2442-B DTD 13th August 2015 from Government of Gujarat Energy and Petrochemical department

NOTE: Unless otherwise specified elsewhere in this specification the meter shall conform to the latest version available of the standard as specified above. If above IS/IEC reports are amended, reference has to be made to Amended IS/IEC/Report.

3. SUPPLY SYSTEM:

3.1 Standard reference voltage: Vref =240V 3.2 Standard Basic Current: Ib = 5 Amp. 3.3 Rated Max. Current: Imax = 30 Amp. (600% Ib) 3.4 Standard frequency: 50 Hz.

4. SUPPLY VARIATION:

4.1 Voltage range: -30% to +20% of ref. voltage 4.2 Frequency: 50 Hz +5.0% to –5.0 %. 4.3 Temperature & Temp. co efficient: -10 deg. C. to 70 deg. C. with temp. Coefficient as 0.05 4.4 Humidity: 95% (sometimes approaches to saturation).

5. CLIMATIC CONDITION:

Sr.No

Particulars Specified Requirements

1 Locations At various LT Connections in the state of Gujarat

2 MAX. Ambient Air Temperature 55 Deg. Centigrade

3 MAX. Ambient Air Temperature in closed Box UP TO 65 Deg. Centigrade

4 Minimum Air Temperature 0 Deg. Centigrade

5 Average Daily Ambient Temperature 25 TO 35 Deg. Centigrade

6 MAX. Relative Humidity 100 %

7 MAX. Altitude above mean sea level 1000 METERS

8 Average Annual rain fall 700 TO 900 MM

9 MAX. Wind Pressure 200 /Sq. MM

of 29 6. GENERAL REQUIREMENT:

The meter shall comply all general and constructional requirements as per IS 13779 (1999), IEC 62053-21(2003) and latest amendment.

6.1 The meter should be housed in a safe, high grade, unbreakable, fire resistant, UV stabilized, virgin Polycarbonate casing of projection mounting type. The meter cover should be transparent, for easy reading of displayed parameters, and observation of operation indicators. The meter base shall not be transparent. The meter casing should not change shape colour, size, and dimensions when subjected to 200 hrs. on UV test as per ASTMD 53.

6.2 Meter shall be designed and constructed in such a way to ensure especially personal safety against electric shock, effect of excessive temperature, safety against spread of fire and protection against solid objects, dust and water etc. All parts, which are subject to corrosion under normal condition, shall be effectively protected. Any protective coating shall not be liable to damage by ordinary handling nor damage due to exposure under normal working condition.

6.3 All insulating materials used in the construction of the meter shall be substantially non hygroscopic, non-ageing and of tested quality.

6.4 All parts that are likely to develop corrosion under normal working condition shall be effectively protected against corrosion by suitable method to achieve durable results.

6.5 All parts of the meter should be resisted against mechanical stroke and shake during the transportation

7. METER HOUSING CONSTRUCTIONAL REQUIREMENT:

7.1 Meter shall be designed and constructed in such a way so as to avoid causing any danger during use and under normal conditions. However, the following shall be ensured.

a) Personal safety against electric shock b) Personal safety against effects of excessive temperature c) Protection against spread of fire d) Protection against penetration of solid objects, dust and water.

7.2 The meter shall be projection type and dust and moisture proof. The meter base & cover shall be made out of unbreakable, high grade, fire resistant, reinforced Polycarbonate material so as to give it tough and non- breakable qualities. The meter body shall be type tested for IP 51 degree of protection as per IS 12063 against ingress of dust, moisture & vermin.

7.3 The meter cover and base shall be suitably shielded so as to protect the meter from adverse effect of AC/DC, Permanent Abnormal external magnetic field. The meter shall meet the requirements of CBIP-325with its latest amendment for immunity against continuous magnetic induction.

7.4 The minimum dimensions of Display Window: 50 mm (W) x 20 mm (H) with +/-3 mm tolerance

7.5 MATERIALS OF BASE/COVER/TERMINAL COVER: a) The construction of the meter shall be suitable for its purpose in all respects and shall be

given reasonable assurance of continuous performance in all mechanical, electrical and magnetic adjustments. The construction shall be such that the meter is not prone to produce audible noise in use. The meter cover & terminal cover shall be of injection moulded in transparent UV stabilized polycarbonate in a natural transparent colour.

of 29

b) The meter base, cover and terminal block cover (ETBC) shall be injection moulded and made of unbreakable high grade flame retardant polycarbonate having good dielectric and mechanical strength to ensure high reliability and long life. The construction of the meter shall be suitable for its purpose in all respects. The meter shall be compact & reliable in design & shall be immune to vibration & shock involved in transportation/handling. The entire design and construction shall be capable of withstanding the severe stresses likely to occur in actual service.

c) Polycarbonate material of only renowned manufacturers shall only be used.

d) The meter base shall be manufactured from high quality industrial grade material viz.

Polycarbonate with 10 % glass filled or better which shall meet following properties to ensure higher reliability and long life of the meter case. Meter base, over & terminal cover shall conform to the following.

Sr No Test

10% Glass filled for meter base & terminal block

Transparent for meter Cover & terminal cover

1

UV ageing for 200 Hrs. as per ASTM : G53(CL

No. 9.3)

4 Hours UV at 60° C, 4 Hours condensation at

50° C

4 Hours UV at 60° C, 4

Hours condensation at

50° C

2 Boiling water test(10MIN) No softening & No softening &

whitening & No whitening & No

change in colour, change in colour,

shape, size & shape, size &

dimensions dimensions

3 Drop Test from 2 MTRS Shall not crack or Shall not crack or

height-only for casing i.e. break break

base + cover + terminal

block + terminal cover,

(Without inside assembly)

4 Glow wire test IS:11000 960 ±15° C 650 ±10° C

(part 2/SEC-1) 1984 OR (For terminal block) (For Terminal cover

IEC PUB,60695- and meter case)

2-12

5 Heat deflection 132° C 125° C

Temp.(HDT) HDT

1.8MPa (100mm)

As per ISO 75

6 Ball pressure test as per 125°C +/- 2°C 125°C +/- 2° C

IEC-60695-10-2

7 Flammability Test (a) As V-0 V-0

per UL 94 or (b) As per IS

11731(Part-2) 1986

8 Minimum Thickness 2.0 mm 2.0 mm

of 29

e) The thickness of casing, base & terminal cover shall be minimum 2.0 mm ±0.2mm. Sufficient clearance shall be allowed between terminals. Further, the supporting webs between the two terminals of the terminal block should be sufficiently high to ensure that the two Neighbouring terminals do not get bridged by dust or it is not possible to have flash over between adjacent terminals of terminal block.

f) Meter base cover and terminal block should be injection moulded and should not be transparent.

g) Meter top cover and terminal cover should be injection molded in transparent natural colour

h) The embossing/engraving/ permanent marking of manufacturer’s logo/ trade name & DISCOM name shall be provided on meter base, meter cover and terminal cover

7.6 METER COVER FIXING ARRANGEMENT:

At least two screws of Nickel plated steel with sealing arrangement shall be provided for proper fixing of meter cover.

7.7 METER BASE FIXING ARRANGEMENTS:

Meter shall have minimum two fixing holes, one at top & other at bottom. The top screw hole shall be provided on back of the meter so that screw head are not accessible after the meter is fixed. Lower hole shall be provided inside the terminal compartment so as to make them in accessible to an unauthorized person after terminal cover is fixed.

7.8 INSULATION MATERIALS:

All insulation materials used in the construction of meter shall be substantially non hygroscopic.

7.9 PROTECTION OF PARTS:

All parts, which are subjected to corrosion under normal working condition, shall be effectively protected against corrosion due to atmospheric condition. The protection coating shall not be liable to damage by ordinary handling or injuriously affected by exposure to air under normal condition of service in actual practice in Gujarat state.

7.10 SCREW /INSULATION: All electrically live screws shall be of heavily tinned brass or equivalent. All other screws shall be electroplated. The terminal should be properly bound in the insulation.

7.11 TERMINAL BLOCK The terminal block shall be of POLYCARBONATE of FR & glass filled quality & shall fulfil requirements: (as per table given under clause no 7.3 (d). Standard terminal block as per IS: 13779/1999 (amended up to date) shall be provided. Moulded terminal block for current and voltage connections conforming to relevant standard to meet the requirement of terminal connection arrangement shall be provided. The termination arrangement shall be provided with a transparent terminal cover and shall be sealable independently to prevent unauthorized tampering.

7.12 TYPE OF TERMINAL COVER:

of 29 The Terminal cover shall be transparent, hinged and extended type & shall enclose terminal compartment except for the provision of conductor entry at the bottom for incoming & outgoing leads. The terminal block, the ETBC meter cover & meter base shall ensure reasonable safety against the spread of fire. They shall not be ignited by thermic overload of live parts in contact with them.

7.13 CONNECTION DIAGRAM & TERMINAL MARKING:

The connection diagram of the meter shall be clearly shown in inside portion of the terminal cover & shall be of permanent nature. Meter terminals shall also be marked & these markings should appear in above diagram.

7.14 LENGTH AND MATERIALS OF TERMINAL: The length of terminal in the terminal block shall be adequate to have a proper grip of the conductor with the help of the screw.

7.15 The internal diameter of terminal holes should be 4 to 6 mm. The materials of the terminals shall be of appropriately plated brass.

7.16 TYPE OF TERMINALS: The terminals shall be suitable to carry rated continuous maximum current and short time overload current & be made of brass. PC ends shall be provided with lugs. The terminals shall have suitable construction with barriers and cover to provide firm and safe connection of current and voltage leads of stranded copper conductors or copper reducer type terminal ends (thimbles).The manner of fixing the conductors to the terminal block shall ensure adequate and durable contact such that there is no risk of loosening or undue heating. Screw connections transmitting contact force and screw fixing which may be loosened and tightened several times during the life of the meter shall be such that the risk of corrosion resulting from contact with any other metal part is minimized. Electrical connections shall be so designed that contact pressure is not transmitted through insulating material.

7.17 TERMINAL SCREWS:

The terminal screws shall be of brass and shall not have a thread sizes less than M4 and less than 5 mm dia. The screws shall not have pointed end of threads. All connection screws and washers should be tinned/nickel plated brass. The terminal screws shall not have pointed end at the bottom. All terminals will have two screws. The terminals shall be properly bound in the insulation. Sufficient clearance can be provided between terminals to avoid possible flash over

7.18 CLEARANCE BETWEEN ADJACENT TERMINALS: The minimum centre to centre clearance between the adjacent terminals shall be 13 mm.

7.19 THE TOP COVER SHOULD BE ULTRASONICALLY WELDED OR break to open type arrangement.

8. METER CONSTRUCTION REQUIREMENT WITH RESPECT OF ELECTRICAL:

8.1 The meter should have internal Real Time Clock with the backup of a Lithium maintenance

of 29 free battery of minimum life of Ten (10) years for operation of the time clock. The Real Time Clock shall be based on Quartz crystal timer so as to make it independent of line frequency variations. The clock shall be factory calibrated. The clock accuracy shall not vary more than ±3 min per year and it will be temperature compensated from 0 C to 50 C.

8.2 The RTC battery & the battery for display in case of power failure should be separate Battery for the display should be such that

(a) In case of power failure, even for the period for six months display can be seen by push button and data can be retrieved through battery mode.

(b) Meter should have suitable arrangement to show at least "Cumulative Active Energy KWh" permanent or at an interval of 2 minutes during power OFF condition of 18 hours without use of push button. (For Import & Export both for 10 sec. each)

8.3 The registered parameters shall not be affected by loss of power. The display shall not be

affected by electrical and magnetic disturbances. The meter shall make use of non-volatile memory capable of storing and retaining all the data required to be stores, without the help of any power source or battery backup and shall have a minimum retention time of 10 years under unpowered condition.

8.4 OUTPUT DEVICE: The meter shall be provided with flashing LED to represent the pulse output for testing the meter by suitable testing equipment. The operation indicator must be visible from the front. It shall be possible to check the accuracy of active energy measurement in both the directions i.e for Import & Export both of the meter in the field by means of LED output. Resolution of the test shall be sufficient to enable the starting current test in less than 10 minutes and accuracy test at the lowest load shall be completed with desired accuracy within 5 minutes.

8.5 CURRENT AND VOLTAGE ELEMENTS:

a) The meter should have either one CT & one shunt OR one shunt & one sensor OR two shunts or two CTS, having CTs with adequate magnetic shielding.

b) For Shunt type meter, the single phase meter shall be based on a E-beam shunt in the phase element and a Current Transformer/Shunt/Hall effect sensor in the neutral element. Alternatively, measurements in both the phase and neutral elements may be done using shunts with proper isolation. However, in case of using one CT the same shall be used in neutral element. The short time current rating shall be as per IS: 13779: 1999.

c) The shunt shall be preferably directly terminated on terminal block without using lug. Alternatively, the termination of current wires on the terminal block should be through lugs and washers of proper size. The loop length of the primary current circuit should be kept minimum.

d) Recording of energy is according to higher current flow either in the Phase or Neutral element.

e) PT less design is highly preferred i.e. for power supply to PCB, in place of conventional electromagnetic VTS; use of potential divider is preferred.

f) Auxiliary Power: The meter shall draw power for working of electronic circuit from phase & neutral.

of 29 g) In meter, power supply unit should be micro control type instead of control transformer type

to avoid magnetic influence.

h) Meter shall be capable of withstanding switching and transient surges so as to protect the internal meter circuit.

i) ELECTROMAGNETIC COMPATIBILITY AND INTERFERENCE REQUIREMENT The meter shall meet EMI/EMC requirements as specified in the relevant standards and shall also be protected against radiated interference from either magnetic or radio frequency sources. The meter shall be designed in such a way that the conducted or radiated electromagnetic disturbance as well as electrostatic discharge do not damage or substantially influence the meter. The meter shall work satisfactory with guaranteed accuracy as per limit of IS:13779 , IEC 62053-21 (2003) under presence of the following quantities. The disturbance(s) to be considered are:

(i) Harmonics (ii)Voltage dips and short interruptions (iii)Fast transient burst test (iv)External D.C. and A.C. magnetic fields (v)Electromagnetic H.F. fields (vi)Electrostatic discharges & HVHF Field (vii)Radio frequency interference suppression

j) Short Time over current: The meter shall be able to carry short time over current of 30 Imax for half cycle at rated frequency.

k) Application of abnormal voltage/frequency: Meter should not be affected/or hanged by nonstandard equipment like jammer. The accuracy of the meter should not be affected with the application of abnormal voltage/frequency such as spark discharge of approximately 35KV in any/all of the following manner for total 10 minutes:

i) On any of the phases and neutral terminals ii) On any connecting wires of the meter iii) Voltage discharge with 10 mm spark gap iv) At any place in load circuit v) Spark on meter body. “After the application of spark discharge meter should operate normally and meter should register the correct energy”.

l) IMPULSE VOLTAGE:

The meter shall withstand 1.2/50 microsecond impulse voltage of peak value 10 KV Peak without any damage in line with Clause 12.7.6.2 of IS 13779:1999. Error at Ib, Upf before & after will be measured & after the test, variation in % error of the meter shall not exceed 50 % of class of index.

m) TEMPERATURE RISE

of 29 i) Under normal conditions of use, measuring element and insulation shall not reach a temperature,

which might adversely affect the operation of the meter. ii) With each current circuit of meter carrying rated maximum current and with each voltage circuit

(and those auxiliary voltage circuits which are energized for periods of longer duration than their normal time constant) carrying 1.25 times the reference voltage, the temperature rise of the respective parts shall not exceed the value given below over and above an ambient temperature of 50˚C.

Measuring element: 50˚C External surface of the case: 15˚C

8.6 PRINTED CIRCUIT BOARD

The fully tested double layered glass epoxy shall be used. The latest technology such as hybrid microcircuit or application specific integrating circuit (ASIC) shall be used to ensure reliable performance. The mounting of components on the PCB shall be SMT (Surface Mounted Technology) Type. The electronic components used in the meter shall be of high quality from world renowned manufacturers and there shall be no drift in accuracy of the meter for at least up to Guarantee period. The make/grade and the range of the components should be from the renowned manufacture. Bidder has to submit list of following components manufacturers using in meters. This list shall be checked with bid and at time of proto type sample/ lot inspection.

Sr Component Requirement No function

1 Current If the Meter is with one current Transformers transformers as measuring elements. The current transformer should withstand for the clauses under 5&9 of IS- 13779 /1999

2 Measurement The measurement or computing Chips chips used in the Meter should be with the Surface mount type along with the ASICs.

3 Shunt Bimetal E-beam welded shunts shall be provided in the phase element and CT / Shunt / Hall effect sensor may be provided in the neutral. Alternatively, both the current elements (phase & neutral) shall have E-beam welded shunts with proper isolation.

4. Quartz Crystal

5 Memory chips The memory chips should not be affected by external parameters like sparking, high voltage spikes or electrostatic discharges. There shall be security isolation between metering circuit, communication circuit & power circuit.

6 Display modules a) The display modules should be well protected from the external UV radiations. b) The display visibility should be sufficient to read the Meter mounted. c) The construction of the modules

of 29

should be such that the displayed quantity should not disturbed with the life of display ( PIN Type). d) It should be trans- reflective STN type industrial grade with extended temperature range.

7 Communication Communication modules should be Modules compatible for the optical port

for communication with meter reading instruments.

8 Optical port Optical port should be used to transfer the meter data to meter reading instrument. The mechanical construction of the port should be such to facilitate the data transfer easily. The Optical Port should not be adversely affected by influence of electromagnetic field, Static discharge.

9 Power supply The power supply should be with the Capabilities as per the relevant standards. It should not be affected in case the maximum voltage of the system appears to the terminals due to faults or due to wrong connections

10 Electronic The active & passive components components should be of the surface mount type & are to be handled & soldered by the state of art assembly processes.

11 Battery Chargeable maintenance free guaranteed life of 10 years.

12 RTC & Micro The accuracy of RTC shall be as per controller. relevant IEC/ IS standards.

13 PCB Glass Epoxy, fire resistance grade

FR4, with minimum thickness 1.6 mm.

of 29 9. SEALING:

9.1 The construction of the meter shall be such as to be sealed independently and prevent unauthorized tampering. Meter should be sealed in such way to prevent unauthorized access. Any attempt for Opening the meter's main cover should not be possible unless by breaking the meter's case.

9.2 All the seals shall be provided on front side only. Rear side sealing arrangement shall not be accepted.

9.3 The supplier shall have to supply meter dully sealed with two nos. of Polycarbonate seals having supplier’s logo and serial numbers The polycarbonate seal has unique number embossed on male and female part of the seal.( one seal has only one unique number).

9.4 The provision shall be made on the Meter for at least two seals to be put by utility user. 9.5 At least two sealing screws of Nickel plated steel shall be provided for proper fixing of

meter cover. Each sealing screw shall have Four independent sealing holes. Two hole should be provided in the head and Two in the bottom portion, so that two separate seals can be provided. The diameter of the hole shall accommodate two seals one by supplier and other by utility. OR provide any alternate arrangement with minimum 02 nickel plated screws which will meet our requirement for sealing as per our prevailing arrangement.

9.6 The meter terminal cover, there shall be one or two similar tinned brass or nickel plated steel sealing screw for the terminal cover.

9.7 Sealing arrangement for communication ports shall be provided. 9.8 The supplier has to provide two security seals on meter body. The security seals shall be

as per ANNEXURE:IV 9.9 The supplier must kept records of sealing done at their works.

9.10 Above sealing requirements shall be checked and approved in proto type sample

10. DISPLAY MODULE: The 6 Digit LCD display having minimum 10 mm height for all digits shall be provided. The Push Button for manual scrolling in addition to Auto scrolling with a persistence time of 10 seconds for each parameter shall be provided

The display shall be permanently backlit LCD. It should be visible in daylight. The back lit should not glow during power off condition

The decimal units shall not be displayed for Cumulative kWh in auto scroll mode. However it shall be displayed in push button mode for high resolution display for testing.

The LCD shall be of STN (super twisted pneumatic type) constructing suitably for temperature withstand of 80oC (storage) & 65o

(i) When the meter is placed over at a constant temperature of 65

C (operation) i.e.

o

(ii) After keeping the meter at a constant temperature of 80

C for a period of 30 minutes, the character of LCD should not deform.

oC for a period of 30 minutes and when restores at normal temperature, LCD display should work satisfactorily. The LCD display should have a wide viewing angle of 120o

(iii) Dot Matrix type LCD display is not acceptable.

and up to one meter distance, for clear visibility of the display of the meter reading at distance. Large viewing area with large display icons is preferred. The registered parameters shall not be affected by loss of power. The display shall not be affected by electrical and magnetic disturbances.

(iv) LED / LCD INDICATORS: Meter should indicate following indicators of size 5 mm. a. LED indicator for Meter calibration (RED) b. LCD indicator for Earth Tamper Indication.

of 29 c. LCD indicator for One line drawl (neutral missing) Tamper Indi. d. LCD indicator magnetic influence Tamper Indication. e. LCD indicator for top cover open. It should be continuously blinking.

The LCD notation must be easily interpretable.

11. DISPLAY PARAMETER:

[A] On auto scrolling mode following parameters should be scrolled continually. The scrolling time between two parameter is 10 sec.

(a) Date (b) Cumulative Active Energy KWh( For import ) (c) Cumulative Active Energy KWh( For Export) (d) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2 ) (e) Instantaneous voltage (f) Cumulative Active Energy KWh( For import ) (g) Cumulative Active Energy KWh( For Export) (h) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2) (i) Instantaneous phase current with direction (j) Cumulative Active Energy KWh( For import ) (k) Cumulative Active Energy KWh( For Export) (l) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2) (m) Instantaneous neutral current with direction (n) Cumulative Active Energy KWh( For import ) (o) Cumulative Active Energy KWh( For Export) (p) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2) (q) Instantaneous active load in Kw with sign(+/-) (r) Cumulative Active Energy KWh( For import ) (s) Cumulative Active Energy KWh( For Export) (t) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2) (u) Non solar hour KWh (v) Cumulative Active Energy KWh( For import ) (w) Cumulative Active Energy KWh( For Export) (x) Past Maximum Demand KW ( For import only) (Maxi. of history 1 and history 2)

[B] PUSH BUTTON. (Manual) Scrolling

Following parameters one after another through push button should be provided on the meter display. a) LCD segment check b) High resolution display for total active energy (KWh) 1.2345 (for dial test for Import &

Export both) c) Date and time d) Serial no. of meter e) Instantaneous voltage f) Instantaneous phase current g) Instantaneous neutral current. h) Instantaneous active load in Kw i) Cumulative Active Energy KWh (For import) j) Cumulative Active Energy KWh( For Export) k) Present Maximum Demand KW (since last reset) l) Past Maximum Demand KW ( For import only) (history 1) m) Past Maximum Demand KW ( For import only) (history 2)

of 29 n) Total Cumulative Active Energy for each calendar month for previous six months.

(For Import & Export both) o) Tamper wise nos. of count with easily interpretable notations. p) Top cover open

The meter shall be change over to auto scroll mode 5 mins. after manual operation.

12. NAME PLATE/MARKING OF METER:

The meter shall have name plate beneath the meter cover such that the name plate cannot be accessed without opening the meter cover and without breaking the seals of the meter cover and the name plate shall be marked indelibly. The name plate marking shall not fade with lapse of time. The basic marking on the meter nameplate shall be as under:

1. Manufacturer's name and trade mark 2. Type designation 3. Nos. of phases and wire 4. Serial number 5. Month and Year of manufacture and guarantee period. 6. A/T number (if any) 7. Reference voltage 8. Rated & Maximum Current 9. Principal units of measurements (KWH) 10. Meter constant (imp/kWh) 11. ‘BIS’ Mark (Applicable for Indian meter manufacturers only) 12. Accuracy Class of meter (class-1.0). 13. Bar Code/QR code identification shall contain details of (i) The make, (ii) Sr no and (iii)

Model/type 14. “Property of UGVCL” (Purchaser DISCOM) 15. “BIDIRECTIONAL METER” in bold font 16. “As per Standard IS 15959:2011 category C3”

Name plate details alphabets should be with suitable size letters and can be read easily. Other marking as per IS 13779 and IS 15959 should be provided on the name plate

13. QUANTITIES TO BE MEASURED, DERIVED, MONITORED AND MEMORISED:

i) Sampling Rate & Derivation of Basic Measurable Quantity: The actual supply wave of related voltages and currents should be sampled out at the rate of minimum 3000 samples per second and should provide integrated values of actual voltage and current cycle and angle between them. while deriving actual basic Active ( cosine part measurable component ) energies ( with respect to relevant voltage wave and current wave ) to assess actual contents of energies persisting / traversing, to have up to-date information for total energy even when highest order of Harmonics is present in supply wave. Voltage

Current

of 29 Power Factor Frequency Date and Time

ii) The single phase meter shall be capable to measure continuously “Total Active Energy KWh” at all loads and power factors i.e. zero lag unity zero lead.

iii) The meter should also have provision for automatic recording of cumulative KWh at 24.00 Hrs on the last day of the month for each calendar month and the same should go to memory.

iv) The meter should record Total cumulative KWh reading and KW MD at pre-programmed date and time of the month for minimum last TWELVE calendar months and stored in NVM. Meter shall be capable to record & store daily midnight data for cumulative kwh & it should be available in base computer. (For Import & Export both).

v) The meter shall be capable to measure and display (I) Cumulative Total (Fundamental+ Harmonics energy) KWh for tariff billing purpose, Instantaneous KW, Instantaneous Voltage, Instantaneous line current, MD KW, time and date.

vi) The meter shall also be capable of measuring, monitoring and storing in the memory minimum four (4) zones of time of day electrical quantities for pre-specified periods of the day.

TOD TIMINGS: The meter should have four time zones; however it should be configured for following two zones:

(1) 05:00 to 20:00 Hrs. Solar Hr (2) 20:00 to 05:00 Hrs. Non Solar Hr

14. MAXIMUM DEMAND:

i) Maximum Demand Integration Period: Integration period for KWMD should be of 30 minutes real time based. However the same shall be programmable through CMRI or Laptop for 15/60 minutes with the help of BCS/CMRI software through authenticated password only

ii) The energy meter shall continuously monitor and calculate the average maximum demand for each demand for time interval of 30 minutes and maximum of these in a calendar month shall be stored. There shall be NO Resetting button for MD. 30 years calendar shall be programmed by manufacturer

15. MAXUMUM DEMAND RESET:

The maximum demand shall automatically be reset at 24.00 hours of the last day of each calendar month. No reset push button shall be provided

16. CONFIGURATION DETAILS:

The following Configuration Details is required to be stored and displayed whenever required. RTC TOD MD INTEGRATION PERIOD AUTO MD RESET DATE

of 29 UNAUTHORISED PROGRAMMING ATTEMPT

17. SELF DIAGNOSTIC: The meter shall keep log in its memory for unsatisfactory / non-functioning of the following

i) Time and date on meter display ii) All display segments on meter display iii) Real Time Clock (RTC) status in meter reading prints out at BCS end iv) Non-volatile Memory (NVM) status in meter reading prints out at BCS end Battery

status

18. TAMPER FEATURES:

(i) The measurement by meter shall not get influenced by injection of AC chopped signal/ DC signal and harmonics on the terminals of the meter. Complete metering system & measurement shall not be affected by the external electromagnetic interference such as electrical discharge of cables and capacitors, harmonics, electrostatic discharges, external magnetic fields and DC current in AC supply etc. The meter shall meet the requirements for immunity against continuous magnetic induction as per requirement mentioned below.

(ii) The meter shall indicate nos. of Tamper conditions illustrated in the Annexure-1 (iii) The meter shall record all energy consumed accurately (i.e. accuracy should be +/- 1.0

%) under 1 to 6 & 8 to 9 of tamper conditions. Testing of tamper conditions no. 10 to 15 and injection of chopped A.C./Pulsating D.C. in neutral will be done at 240 V, actual current & UPF and for these conditions ,the accuracy of meter should not be poorer than -2.5%. Also for the tamper conditions no 7 the difference of Phase current & neutral current should be preferably 5%. The error of the meter should be measured only after logging of the tamper condition.

(iv) For all above tamper conditions, meter display should be ON and output pulse should be available with push button.

(v) The all 15 tamper conditions should be tested for maximum three minutes and at Vref, unity pf and at least 1 amp current. All types of tampers must be logged, if tamper persists for one minute. The restoration time should be also one minute.

(vi) The tamper conditions no. 10 to 15 are pertains to neutral disturbance and for these tamper conditions, neutral disturbance event should be logged.

(vii) If the “Top cover open” tamper occur, C-OPEN should only to be displayed during power ON and OFF both conditions. Display should stuck (i.e. No Scrolling of any parameters.). However, meter should record energy continuously & KWH reading shall be access/available by use of Push button. After five minutes again Display should stuck & C-OPEN should only to be displayed on Display. Top cover open tamper shall be logged permanently.

(viii) The working of Meter under different magnetic influence conditions is as under for Active energy

a) Meter must be immune to the continuous D.C. stray magnetic field of 67mT± 5%. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.1, Table : 17 & its notes.

b) Meter must be immune to the A.C. stray magnetic field of 0.5mT± 5%. Method for the

testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.3, Table: 17 & its notes.

of 29

c) Meter should be immune to the continuous D.C. abnormal magnetic of 0.2 Tesla± 5%.In case of if it is not immune than Meter should switch over to 100% Imax, UPF. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.2, Table: 17 & its notes.

d) Meter should be immune to the A.C. abnormal magnetic of 10mT.In case of if it is not

immune than Meter should switch over to 100% Imax, UPF. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.4, Table: 17 & its notes.

e) Meter should be immune to the A.C. abnormal magnetic of 0.2 Tesla± 5%. In case of if it is not

immune than Meter should switch over to 100% IMAX, UPF.

Method of testing & obtaining magnetic field shall be as under.

The abnormal A.C. magnetic induction emanating from a circular air cored coil (O.D. 200 mm, I.D. 38 mm, Depth 50 mm, 14 SWG, 20000 ampere-turns) producing 0.2 Tesla± 5% in the central region of its either surface shall be applied successively to all the surfaces of the meter and under the most unfavourable conditions of phase and direction to determine any abnormality under its influence.

Meter should be immune to permanent magnet of 0.5 T of minimum size 70 x70 x 50 mm. In case of if it is not immune than Meter should switch over to 100% Imax, UPF. Tests at above sr. no.(e) & (f) are special requirement of DISCOM and for testing below mentioned test conditions are applicable.

(ix) When the meter shall not immune to the magnetic field the energy recording on 100% Imax shall only in Import mode. In no case export energy shall be recorded meter on 100% Imax under magnetic influence.

(x) In the event of logging of presence of abnormal magnetic induction with date and time, the positive variation of error may be beyond the limit of 4% but not exceeding a value (e) as given in Note 3.2 under Table 17 of CBIP 325, corresponding to nominal registration of the meter at reference voltage, 100% maximum current and cosΦ=1.

(xi) During the test(s) no abnormality like movement of digits, flickering/ switching on- off of

display abnormal heating and perceptible change of error should occur. After the test(s) there should not be any permanent change of error exceeding half the accuracy class index at Imax, CosΦ = 1 and 0.5 inductive and at 5% lb, CosΦ =1

(xii) Persistence time for occurrence and restoration of magnet event is one minute (xiii) Meter shall record correct energy on reference voltage, actual current & unity power factor

in absence of neutral, LCD indication of such tamper shall be provided (xiv) Tamper to be stored in FIFO manner. Minimum events to be stored as follows:

1. Earth Event: Minimum 20 ( Occurrence + restoration) 2. Neutral Missing: Minimum 20 ( Occurrence + restoration) 3. Neutral Disturbance: Minimum 20 ( Occurrence + restoration) 4. Magnetic Tamper: Minimum 20 ( Occurrence + restoration) 5. Meter Cover Open Tamper: 1 ( Occurrence only + Not to be restore)

of 29 19. COMMUNICATION CAPABILITIES:

The meter should have facility for data retrieval through optical port and RS232 using CMRI and Laptop PC.

i) The meter shall has a galvanic ally isolated optical communication port as per IEC PACT/ ANSI/ IEC 1107/ provided on the front of the meter to facilitate downloading the billing and history data to a CMRI / Base computer.

ii) The meter shall be provided with two ports for communication of the measured/collected data as per IS: 15959 (including latest amendment), i.e. a hardware port compatible with RS 232 specifications which shall be used for remote access through suitable Modem (GPRS/GSM/EDGE/CDMA/PSTN/LPR) and an Optical port complying with hardware specifications detailed in IEC-62056-21. This shall be used for local data downloading through a DLMS compliant HHU.

iii) The RS 232 port shall support the default and minimum baud rate of 9600 bps. The PIN configuration for RS 232 port shall be as under:

RS 232 Port RJ11 (4 PIN 4 connection) 1GND,2Rx, 3TX,4Vcc

20. BASE COMPUTER SOFTWARE (BCS):

(i) Supplier shall have to submit predefined copies of all the software’s, i.e. meter reading software for CMRI, Base computer software for meter data analysis and technical details etc.

(ii) Licensed copies of the software shall be made available to DISCOMs OR it should be compatible with software available with DISCOMs for installation on HHT or common meter reading instrument (CMRI) and Base computer software (BCS) by the supplier.

(iii) Windows based user interactive Base Computer Software (BCS) for receiving data from HHT or CMRI and downloading instructions from base computer software to CMRI.

(iv) Necessary software for loading application program into meter via CMRI. (v) The supplier should ensure that software supplied with this package works properly with

HHT or CMRIs of other manufacturers. (vi) The downloaded data shall be converted to the ASCII or database file format for easy

integration with the existing billing software of GUVNL. It should be user configurable as per selective parameters. It should be group ASCII & scalable.

(vii) After successful downloading data either from the meter or MRI, Meter data should be automatic uploaded to BCS without any separate procedure to upload data. Meter List shall be shown on computer Display screen.

(viii) There shall be provision of filter for finding the particular meter viz. one can find the meter on the basis of date, Month, Sr. No, etc

(ix) It should be possible to download the following data from the meter memory through the optical port and RS232.

1) Serial Number of meter 2) Cumulative total active energy (KWh) (For Import & Export both) 3) Cumulative total Active energy (KWh) for the last 12 calendar months) (For Import &

Export both) 4) Maximum Demand KW with date & time for last 12 calendar months with 30

Minutes integration period) (For Import) 5) Maximum Demand KW since last reset) (For Import ) 6) Instantaneous voltage

of 29 7) Instantaneous phase current 8) Instantaneous neutral current 9) Instantaneous load in Watt/KW 10) Daily midnight data for cumulative kWh energy for 12 months) (For Import& Export) 11) All Tamper events with date and time, Voltage, Phase & Neutral Current, Kwh

(Import And Export). 12) Top cover open tamper indication shall be logged permanently 13) Status of NVM, RTC, battery & programming count

21. PROGRAMMING:

1) The meter shall be software calibrated at factory end and shall be supplied with certificate along with dispatch. However modification of calibration should not be possible at site. The meter should not have any form of mechanical adjustments such as trip pots potentiometer etc. for calibration. The meter shall be tested, calibrated and sealed at manufacturer’s works before dispatch. Further, no modification of calibration shall be possible at site by any means what so ever.

2) Display parameters in the meter should not be accessible for reprogramming at site. 3) The following Details is required to be stored and shall be available in BCS

RTC TOD MD INTEGRATION PERIOD AUTO MD RESET DATE

Note: Meter shall have facility to change above parameter through authenticated pass ward. No hardware lock should be provided.

22. SUBMISSION OF TENDER SAMPLE:

The supplier shall submit Three nos. samples of meters of offered rating at the time of offer. Offer without sample will not be scrutinized on the strength of GTP. The samples are to be delivered to The Deputy Engineer : Regional Store Office: UTTAR GUJARAT VIJ COMPANY LTD.: Visnagar Road: Mehsana: 384001. Bidder has to submit the tender samples with DLMS as per IS-15959 & Display parameters and tampers as per Annexure-1. The samples shall be tested at ERDA/CPRI/NABL accredited lab for following tests. If the sample found failed in any of the test carried out at ERDA/ CPRI/NABL accredited lab, the offer of that bidder shall be considered disqualified. However, the decision of the company shall be final and binding to all the bidders.

List of tests to be conducted on tender sample/s as per IS 13779/99, IEC 62053-21 (2003) and as per the specification, wherever specified.

(i) Insulation resistance test as per IS 13779 (ii) AC high voltage test method as per IS-13779 but shall be taken at 4 KV for one minute. (iii) 10 KV impulse voltage test as per -As per cl .no.8.6 (l). (iv) ESD Test for 35 KV as per cl .no. 8.6 (k) of specification (v) AC, DC and permanent magnet test as per as per specification clause no. 18 (viii to xi) (vi) DC and even harmonics in ac current circuit - Phase wise (DC immunity)-As per IS-13779 (vii) Dry heat test as per IS-13779

of 29 (viii) Test for total forward energy (Fundamental + Harmonics) as per specification IEC61053-21

clause No.8.2.1 & Table: 8 (ix) Test of effect of Influence quantity as per IS-13779 (x) Test of no load condition as per IS-13779 (xi) Test of starting condition as per IS-13779 (xii) Test for limit of error as per IS-13779 [for active(import& export) (Both Phase & Neutral

circuit) including 0.25 lag and 0.5 lead pf] (xiii) Interpretation of test results ,if required (xiv) Test of meter constant as per IS-13779 (xv) Repeatability of error test as per IS-13779 (xvi) Test of power consumption in voltage and current circuit as per IS-13779 (xvii) Short time over current test as per 8.6 (j) (xviii) Test for terminals and screws at 150% Imax for two hours. After the test no physical damage

should occur & % error should not exceed accuracy class of the meter. (xix) The meter shall be capable to withstand phase to phase voltage (440V) if applied

between phases to neutral for minimum 2 hours. (xx) Verification of display parameters and functional requirements (xxi) Verification of Tamper conditions - as per Annexure I, top cover open tamper, injection of

chopped A.C./Pulsating D.C. in neutral

23. TYPE TEST REPORT:

The supplier shall have all type test certificates from the Govt. approved laboratory viz: CPRI, NPL, ERTL, ETDC & ERDA for Indian supplier and for foreign supplier the certificate should be from recognized Govt. approved lab. of that respective country, as per IS No.13779 /1999 or IEC 62053:21 as the case may be. Type test should not be older than 7 Years. The supplier shall have also the type test certificate as per clause No. 18 (viii to xi) i.e. AC/DC magnetic influence test and Cl. No: as per specification IEC61053-21 clause No.8.2.1 & Table: 8, i.e. total energy test on the same rating of meter

24. MINIMUM TESTING FACILITES:

The Bidder shall have the necessary minimum testing facilities for carrying out the all the tests mentioned in Proto type test clause:

The manufacturer shall have duly calibrated ERS meter of Class 0.1 accuracy or better.

Manufacturer also shall possess automatic computerized meter test bench system for carrying out the relevant routine/acceptance tests as well as facility to generate test reports for each and every meter tested.

25. PROTO TYPE TEST:

The supplier shall also have to manufacture 3 nos. of prototype sample meters complying to all above technical specification, type, rating, functional requirements, tamper features, display design etc. and shall have to offer for inspection within 30 days from the date of placement of LOI and before commencement of bulk supply.

of 29 During the proto type sample following test shall be carried out as per the specifications at supplier’s works

(i) AC high voltage test -As per IS 13779 (ii) Insulation resistance test -As per IS 13779 (iii) Test of limits of errors for active (import & export) (Both Phase & Neutral circuit)

including 0.25 lag and 0.5 lead pf. -As per IS 13779 (iv) Test of meter constant-As per IS 13779 (v) Test of starting condition-As per IS 13779 (vi) Test of no load condition-As per IS 13779 (vii) Repeatability of error test-As per IS 13779 (viii) Test of power consumption in voltage and current circuit -As per IS 13779 (ix) ESD Test for 35 KV as per specification. (x) The meter shall record and display total energy including Harmonic energy As per

IEC61053-21 clause No.8.2.1 & Table: 8 (xi) DC and even harmonics in ac current circuit - (DC immunity)-As per IS 13779 (xii) Test of effect of Influence quantity as per IS 13779. (xiii) AC, DC and permanent magnet test as per specification clause no.18 (viii to xi) (xiv) Test for terminals and screw at 150% Imax for two hours. After the test no physical

damage should occur & % error should not exceed accuracy class of the meter. (xv) The meter shall be capable to withstand phase to phase voltage (440V) if applied

between phases to neutral for minimum 2 hours. (xvi) The measurement by meter shall not get influenced by injection of AC chopped signal-

as per Annexure-II. (xvii) The measurement by meter shall not get influenced by injection of pulsating DC signal

on the terminals of meter- as per Annexure-III. (xviii) Verification of Tamper conditions - as per Annexure-I, top cover open tamper. (xix) Verification of display parameters (xx) Physical verification of meter as per specification including sealing as per

specification requirements

26. ACCEPTANCE TYPE TEST:

Following acceptance tests as stipulated in the relevant standards and as per specification shall be carried out by the supplier in the presence of the purchaser's representative on selected samples as per IS 13779 and IS 4905.


including 0.25 lag and 0.5 lead pf. -As per IS 13779 (iv) Test of meter constant-As per IS 13779

of 29 (v) Test of starting condition-As per IS 13779 (vi) Test of no load condition-As per IS 13779 (vii) Repeatability of error test-As per IS 13779 (viii) Test of power consumption in voltage and current circuit -As per IS 13779 (ix) ESD Test for 35 KV as per specification. (x) The meter shall record and display total energy including Harmonic energy As per

IEC61053-21 clause No.8.2.1 & Table: 8 (xi) DC and even harmonics in ac current circuit - (DC immunity)-As per IS 13779 (xii) Test of effect of Influence quantity as per IS 13779. (xiii) AC, DC and permanent magnet test as per specification clause no.18 (viii to xi) (xiv) Test for terminals and screw at 150% Imax for two hours. After the test no physical

damage should occur & % error should not exceed accuracy class of the meter. (xv) The meter shall be capable to withstand phase to phase voltage (440V) if applied

between phases to neutral for minimum 2 hours. (xvi) The measurement by meter shall not get influenced by injection of AC chopped

signal- as per Annexure-II (xvii) The measurement by meter shall not get influenced by injection of pulsating DC signal

on the terminals of meter- as per Annexure-III (xviii) Verification of Tamper conditions - as per Annexure-I, top cover open tamper. (xix) Verification of display parameters (xx) Physical verification of meter as per specification including sealing as per proto type

sample

27. AUDIT TEST:

Following tests as stipulated in the relevant standards and as per specification shall be carried out at Hi-Tech Meter Laboratory in presence of the supplier on eight samples.


including 0.25 lag and 0.5 lead pf. -As per IS 13779 (iv) Test of meter constant-As per IS 13779 (v) Test of starting condition-As per IS 13779 (vi) Test of no load condition-As per IS 13779 (vii) Repeatability of error test-As per IS 13779 (viii) Test of power consumption in voltage and current circuit -As per IS 13779 (ix) The meter shall record and display total energy including Harmonic energy As per

IEC61053-21 clause No.8.2.1 & Table: 8 (x) Test of effect of Influence quantity as per IS 13779. (xi) AC, DC and permanent magnet test as per specification clause no.15.10 (xii) The measurement by meter shall not get influenced by injection of AC chopped

signal- as per Annexure-II (xiii) The measurement by meter shall not get influenced by injection of pulsating DC

signal on the terminals of meter- as per Annexure-III (xiv) Verification of Tamper conditions - as per Annexure-I

of 29 (xv) Verification of display parameters

28. ROUTIN TEST: All routine tests as stipulated in the relevant standards shall be carried out and routine test-certificates/reports shall be submitted along with inspection call letter in the form of composite disk (CD) and on the CD, A/T No. serial no. of meters to be offered etc. shall be provided with sticker pasted on the CD, to the purchaser for approval and also placed inside individual meter packing. The sealing report for all sealing done by supplier is to attached.

29. INSPECTION:

The purchaser may carry out the inspection at any stage of manufacturing. The manufacturer shall grant access to the purchase’s representative at a reasonable time when the work is in progress. Inspection and acceptance of any equipment under this specification by the purchaser shall not relieve the supplier of his obligation of furnishing the meters in accordance with the specification and shall not prevent subsequent rejection if the meters are found to be defective. All acceptance tests and inspection shall be made at the place of manufacturer works unless otherwise especially agreed upon by the bidder and purchaser at the time of purchase. The bidder shall offer the inspector representing the purchaser all responsible facilities without charge, to satisfy him that the equipment is being furnished in accordance with this specification. The supplier shall keep the purchaser informed in advance, about the manufacturing program so that arrangement can be made for inspection. In case of non-availability of meter during the visit of inspection of the lot offered, the visit shall be considered as unfruitful visit and all charges of this visit shall be deducted from the bill of the supplier. The purchaser reserves the right to carry out type tests of any meter selected from the lot/meter received at stores of UGVCL.

30. QUALITY ASSURANCE PLAN:

The bidder shall invariably furnish the following information along with his bid, failing which his bid shall be liable for rejection. Information shall be separately given for individual type of material offered.

i. The structure of organization. ii. The duties and responsibilities assigned to staff ensuring quality of work.

iii. The system of purchasing, taking delivery and verification of materials. iv. The system of ensuring quality of workmanship. v. The quality assurance arrangement shall confirm to relevant requirements of ISO

:9001/9002 as applicable.

of 29 vi. Statement giving list of important raw materials names of sub-suppliers for the raw

materials, list of standards according to which the raw materials are tested. List of tests normally carried out on raw materials in presence of Bidder’s representative, copies of test certificates etc.

vii. Information and copies of test certificates as above in receipt of bought out accessories. viii. List of manufacturing facilities available.

ix. Level of automation achieved and lists of area where manual processing exists. x. List of area in manufacturing process, where stage inspections are normally carried out for

quality control and details of such tests and inspections. xi. List of testing equipment available with the bidder for final testing equipments specified

and test plant limitation. If any vis-a-vis the type, special acceptance and routine tests specified in the relevant standards, these limitations shall be very clearly brought out in schedule of deviations from specified test requirements.

31. BIS LICENSE:

The offered meter shall be ISI marked and bidder shall have to furnish valid BIS license for 5-30 A meters along with the offer. Manufacturer having ISO: 9001/9002 shall be preferred

32. GUARANTEE PERIOD:

The meter shall be guaranteed for the period of five years from the date of commissioning or five and half year from the date of delivery whichever is earlier. The meters found defective within above guarantee period shall be replaced/ repaired by the supplier free of cost. After intimation from the any UGVCL offices regarding collection of defective meters, same are to be collected within fifteen days invariably. If defective meters are not replaced/repaired within one month from the date of the receipt of the intimation, UGVCL shall recover an equivalent amount of meter plus 15% supervision charges from any of the bills

33. PACKAGING:

The meters shall be suitably packed in order to avoid damage or disturbance during transit or handling. Each meter may be suitably packed in the first instance to prevent ingress of moisture and dust and then placed in a cushioned carton of a suitable material to prevent damage due to shocks during transit. User manual to be provided with each master cartoon. Hard copy of Routine test certificate is to be provided with individual meter.

34. SERVICES:

The bidder shall provide following services:

i) Services free of cost during guarantee period. ii) To train UGVCL staff for installation and handling of these meters. iii) To assist UGVCL lab staff to install, calibration, checking etc.

of 29 iv) To assist the UGVCL staff for taking MRI reading, theft wrapped meter analysis etc. At

free of cost. v) To assist the UGVCL staff for installing, using and operation of software

35. ANNEXURE -I:

of 29

36. ANNEXURE -II:

of 29 37. ANNEXURE -III:

CIRCUIT DIAGRAM FOR TEST FIGURE TO INTRODUCE PULSATING D.C IN NUTRAL

Fig. 1

Fig. 2

of 29

38. ANNEXURE -IV:

SECURITY SEAL

In addition to 2 Nos. of polycarbonate seals, further 2 Nos. of tamper proof void seals are to be provided on the Meter body in such a way that both the side covers shall be sealed by the tamper proof void seals. The tamper proof void seals to be provided on Meters shall be as per the following specification:

[1] Size of the seal -- 3 x 1 inches.

[2] The seal should be digitally printed on white VOID film having UV destructive inks printed with thermal resin ribbon technology.

[3] The seal should be water proof and should withstand all the weather conditions. The seal should have adhesive of sufficient strength to avoid peeling off under extreme temperature and environmental conditions.

[4]The seal should be sticker type seal and applied on both the side of the Meter which connects the body and the box.

[5]If some one lifts the seal, “VOID” impression should be transferred on the meter and if this is applied back, “VOID” impression should be readable from the surface of the seal.

[6]The disturbed portion of the seal should glow under UV light if the seal is disturbed from any part.

[7]Barcodes of serial numbers should be printed on the seals and the barcodes should be readable with a barcode scanner.

[8]The seals should have continuous variable serial numbers along with security codes of last three digits of serial numbers printed in black and the same serial numbers along with code of serial numbers shall also be printed in a vertical semi circular shape which should be visible only under Ultra-violet (UV) light.

[9]Two security cuts should be given on the seal on both the sides, and if some one tries to lift the seal it should tear off from the security cuts. The security cuts should be made with a computer controlled plotter which should put the security cuts on the same position on each seal.

[10]The name of the supplier and supplier logo along with the security warning or any other information in any language as given by the company should be printed on the sea.

[11]There should be a provision of incorporating officers’ signature on the seal as given by the company.

[12]If some one tries to remove the seal by allying heat, the printing should get disturbed and the shape of the seal should change if more heat is applied.

The seals to be used for sealing of Meters are to be fixed after inspection is over.

SCOPE:STANDARD APPLICABLE:SUPPLY SYSTEM:SUPPLY VARIATION:CLIMATIC CONDITION:GENERAL REQUIREMENT:METER HOUSING CONSTRUCTIONAL REQUIREMENT:METER CONSTRUCTION REQUIREMENT WITH RESPECT OF ELECTRICAL:SEALING:DISPLAY MODULE:DISPLAY PARAMETER:NAME PLATE/MARKING OF METER:QUANTITIES TO BE MEASURED, DERIVED, MONITORED AND MEMORISED:MAXIMUM DEMAND:MAXUMUM DEMAND RESET:CONFIGURATION DETAILS:SELF DIAGNOSTIC:TAMPER FEATURES:COMMUNICATION CAPABILITIES:BASE COMPUTER SOFTWARE (BCS):PROGRAMMING:SUBMISSION OF TENDER SAMPLE:TYPE TEST REPORT:MINIMUM TESTING FACILITES:PROTO TYPE TEST:ACCEPTANCE TYPE TEST:AUDIT TEST:ROUTIN TEST:INSPECTION:QUALITY ASSURANCE PLAN:BIS LICENSE:GUARANTEE PERIOD:PACKAGING:SERVICES:ANNEXURE -I:ANNEXURE -II:ANNEXURE -III:ANNEXURE -IV:

table of contents...cbip-325 cbip guide on static energy meter specifications & testing on standard...

Documents